Paper folding machine



c. L. BURDICK PAPER FOLDING MACHINE Filed Ju1y'22, 1929 Wu www" Inf@`Ian. 26, 1932 Y Jan. 26, 1932. c. L. BURDICK 1,843,020

PAPER FOLDING MACHINE Filed July 22, 1929 4 Sheets-Sheet 2 ATTORNEY Jan.26, 1932. c. BURDICK PAPER FOLDING MACHINE Filed July 22, 1929 4Sheets-Sheet 5 w uns l lllllllulllllllllnll l I I I I I l I l l I I|||||LI|| l I l HHUIIIHHHAUMHIaJdxIIII Illia Jan. 26, T932. c. L.BURDICK 1,843,020

PAPER FOLDING MACHINE Filed July 22, 1929 4 Sheets-Sheet 4 Patented Jan.25, 1932 PATENT GFFICE CHARLES LAURENCE BURDICK, F LONDON, ENGLAND TAPERFOLDING, MACHINE lApplication led July 22',` 1929, Serial No. 380,218,and in Great Britain September 24, 1928'.

This invention relatesvto paper folding machines.

In my British patent specification No. 178,531, I have described such amachine in which a sheet is fed between substantially parallelarticulated plates which are then folded, a member preferablywithdrawing the Sheet and giving it an additional fold by passingbetween two setsv of such plates, bars V1'0 or postsbeing provided tocomplete the fold.

The present invention relates generally to such a machine and comprisesimprovements adapted but not necessarily confined thereto. In order tomake the nature of the inven- 15 tionunderstood and for ease ofdescription Y chine and provided with cam paths whereby the movements ofthe several parts are effected` and cc-ordinated- The inventioncomprises the above combination and further includes the novel features,combinations and arrangements which are embodiedin the apparatus no'w tobe described and are specifically claimed.

Referring now to the accompanying drawf ings, f

' 35 Figure 1 is a'sideelevation of themachine,

Y 4Figure 2 an end elevation, and

AFigure 3 a plan view. f

"Figure 4 'is aperspective view to an enlarged scale showing the feed'ofa magazine.

v*10 Figure 5 sho-ws themagazine also to an enlarged scale, and

YFigures 6 and 7 are detail views making clearer the operation ofcertain parts. A' Figure 8 is a side elevation of the machine with parts-in section and parts broken away to illustrate more particularly thecorrelation of the'parts., y f

In-the preferred form as shown upon the drawings, the operations of themachine are all derived from a y cylinderY 1 operated through gearwheels 2 and 3 by means of a belt pulley it or cranked handle orhandwheel 5. The cylinder is provided with cam paths, the front'path 6operating a feed device by means of a downwardly projecting pin 7 can 53ried on a downward projection 8 from the feed slide Qrunning upon rails10 disposed near the upper portion of the centre of the machine. Theslide 9 carries a gripper 11 normally spring-pressed by a spring 12 50against an anvil 13 carried by the slide. The slide is shown in allfigures in its front position-that is to say when it is nearest to thefeeding end of the machine. As indicated at Figure 7 a spring trigger11i has just been 05 tripped by a fired pin 15 to release the gripper 11which will just have seized the front edge of the neXt sheet to befolded, between itself and the anvil 13. In the extreme forward positionof the feeding slide the gripper 11 is opened by contact of the stud 16against the inclined abutment 17 whereby the end of the trigger 14 iscaught under the abutment 11a of the gripper and the gripper releasesthe sheet and remains lopen until it returns to grip the next sheet uponrelease of the trigger.

A central cam path 18 is engaged by a pin 19 depending from the foldingslide 20. The latter runs upon rollers 21, 21 engaging in 30 lateralslideways 22 running longitudinally of the edges of the machine.Uprights 23 carry links 24: each of which is coupled to one of theforemost of the sliding stub spindles 25. 25 sliding in the longitudinal85 slots 26 and supporting the folding plates. A rear cam pathl 27engages a pin 28 depending from the slide 29. A roller 30 carried bythis slide runs in a slot 31'formed in a secondary slide 32 to which theblade 33 is pivoted at 34. This slot arrangement acts as a lostmotiondevice so that upon initial movement of the slide 29 the roller 30raises the blade 33 to the upright position shown shown in the drawings.At the same time the posts 51, 51a with their supporting brackets 53 areraised to the upright position shown by the passage beneath them of theforward projections 64: carried at the front of the slide 29, and areheld raised by the passage of a secondary slide beneath them duringfurther movement of the primary slide.

I j During this movement the secondary slide 32 is carried bodilybackward with the blade upright until it reaches the position in thedrawings.

A magazine of clips 35 indicated at Figure y is arranged to fit intoslot 36, At the back of each clip is formed a slot 37 forming a rackadapted to be engaged` by the teeth of a gear wheel 38 mounted upon thesame f vertical spindle 39 as aratchet wheel 40. The magazine of clips35is adapted to befed by means lof-the pawl4l to bring successive clipsinto'v position to be Ventered by the blade 33. This pawl 41 isspringpressed by spring 42 toV engagethe teeth of ,'theyratchet wheel40. The ratchetvdeviceis operatedV by a forwardgstrokeof a projectingvabutment 44 carried by `a feed bar 45 which is reciprocated in thelongitudinaldirection of the machine by j means of a bellcrank 46havingl a fixed fulcrum at 47 and provided rwith anengagement 48 betweencollars on the bar 45 and at the other end with a stud 49 engaging anVinclined cam slot 50 carriedby afeed slide 9.V Normally, (when there isno note or other paper `inthefolding mechanism) the abutment 44 failstocontact withthe lever 43 as may be :1.a j seen at Figure 4. vWhen afolded noteis carried by the blade 33 between the posts 51,

51a to produce the final fold there is a certainr amount of spring. Thepost 51 in its vertical position comes 'against Aa rigid backing bracket52 rand in consequence the slide spring moves the post 51a` and itssupporting bracket 53 suicientl-y to dep'ressthe lever 54.

This imparts 4-apartial rotation to the rod 45 by pressurey upon the armor plate 55 and 1 elevates the 'abutment 44 sniiiciently to cause Vittoengagewith the lever 43. and to impart a stroke to the pawl 4l sorotating the ratchet 'Y Wheel-40 to the extent of one tooth and bring-On the forward stroke ofthe rod 45 after partial rotation as describedabovea project,- ing arm-.56 lifts ari-inclined deflector plate 57 aboutits ypivot58 but on the return stroke the arm engagesthe upper surfaceofthe .ing the'next clip 35 into position. if

le plate 52X-thus rotating-the rod'45 back toits initial or inoperativeposition ready to Vbe reset as soon vas another note is passed betweenthe rests...k 1, r

f The-pairs of'articulatedplates 60, 60 bei '-1 Atween whichtheflatfnote is drawn by the j' Ifhave previously proposed. r 15.3

The sheet reservoir-63 may conveniently folle-wed; 'Il1e-noteshavingbeen placed in the reservoir with the bottom one furthest back theVhandle 5 is rotated until the gripper 11. engages the Ybottom note.'soon as the plates GO'are flat the feedinotionof the gripper betweenthem is started by means of the forward cam. Having reached itsextremebackward position the note is released from the gripper and thereturn stroke takes place. Upon completion of the returnmstrokeV thecentral cam causes the notes to be folded and just before they' arecompletely Vfolded 1 the posts 51 and 51a andthe blade33 become upright.Further motion moves the secondary slide andthe bladecarries the notethrough the posts (thus setting themagazinefeed device) and into aclip35. The further rotation causes the lowering of the blade and postsand straightening of the platesready to receive the next note alreadyseized by the gripper 11. I f

I claim Y Y l. A paper folding machine including sets of folding plates,means for feeding a sheet between two' sets of said plates, Vmeans foractuating. thefsaid platesrelatively to ,one

another to fold the sheet, means for withdrawing the folded sheet from`the'said plates, a rotary drivingfmember, revolving cam paths operatedby saiddriving member, and operav tive connections wherebythe, said campaths effect andcoordinate the movementsA ofthe said sheet feeding,`plate actuating and-sheet withdrawingfmeans. v-

. 2A. paper folding vmachine including a pair-of parallel articulatedplates,- means including a slide for feeding ya sheet between saidplates,means including a slide" for folding the-plates with the sheetbetween them, means including a slideV for withdrawing the folded sheetfrom the folded plates, av ref volvable cam path controlling eachgofsaid slides and means to lcause-said cam ,patl'isV` to mechanismcomprising two sets of parallel articulated plates arranged so that apaper in position for folding extends with a gap between them,stub-axles projecting outwardly 5 from plates of each set, slidewaysalong which said axles are movable for folding the plates, andconnections bridging said gap but out of the area required by the paperand coordinating the movements of the plates of the two sets.

5. A paper-folding machine comprising paper-folding plates,paper-feeding means to feed the paper to said plates, plate-actuatingmeans, paper-withdrawing means, and a revolving member arrangedlongitudinally of the machine and carrying cam paths whereby theplate-actuating means and the paperwithdrawing means are operated.

6. A paper-folding machine comprising paper-folding plates,paper-feeding means to feed the paper to said plates, plate-actuatingmeans, paper-withdrawing means, and a revolving member arrangedlongitudinally of the machine and carrying cam paths whereby thepaper-feeding means, the plate-actuating means and the paper-withdrawingmeans are operated.

7. A sheet-folding machine including a folded sheet receiving magazine,means to feed the magazine into position to receive successive sheets,and means whereby the said feeding means are ymade operative by theactual presence of a folded sheet in the machine ready to be fed to themagazine.

8. In a sheet-folding machine, spaced members to receive a folded sheet,means to feed the folded sheet between said spaced members, andmechanism operated in the relative movement of the spaced membersincident to the passage of thefolded sheet between them for compellingoperation of an incidental part of the folding machine.

9. A sheet-folding machine including spaced members to receive a foldedsheet between them, means to feed the folded sheet between said spacedmembers and thereby impart relative movement to said members, and

feed mechanism for an incidental part of the folding machine operated inthe relative movement between said spaced members.

In testimony whereof I aiiix my signature. CHARLES LAURENCE BURDICK.

